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发明名称
AN APPARATUS FOR INTERCHANGING A KEY FOR A ROLLING ROLL
摘要
申请公布号
KR100797359(B1)
申请公布日期
2008.01.22
申请号
KR20020013765
申请日期
2002.03.14
申请人
发明人
分类号
B21B31/00;(IPC1-7):B21B31/00
主分类号
B21B31/00
代理机构
代理人
主权项
地址
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